SCIENCE

1st EDITION

ISBN SYLLABUS COVERED

YEAR 2021-22 “978-93-5463-658-5”

CENTRAL BOARD OF SECONDARY EDUCATION DELHI

PUBLISHED BY

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DISCL AIMER

Oswaal Books has exercised due care and caution in collecting all the data before publishing this book. In spite of this, if any omission, inaccuracy or printing error occurs with regard to the data contained in this book, Oswaal Books will not be held responsible or liable. Oswaal Books will be grateful if you could point out any such error or offer your suggestions which will be of great help for other readers. Printed at : Repro India Ltd. (2)

TABLE OF CONTENTS l

Latest CBSE Circular & Syllabus released on 22, July 2021 for Academic Year 2021-22

(CBSE Cir. No. Acad 53/2021) l

Topper's Answer – 2020 (Issued by CBSE)

6 - 12

17 - 23

Theme: Materials Unit I : Chemical Substances : Nature and Behaviour 1. Carbon and Its Compounds 2. Periodic Classification Of Elements l Self Assessment Test- 1

1 - 18 19 - 44 45 - 46

Theme: The World Of Living Unit II : World of Living 3. 4. l

47 - 78 79 - 94 95 - 97

How do Organisms Reproduce? Heredity and Evolution Self Assessment Test- 2

Theme: Natural Phenomena Unit IV : Effects of Current 5. Electricity 6. Magnetic Effects of Electric Current l Self Assessment Test- 3

98 - 124 125 - 144 145 - 146

Theme: Natural Resources Unit V : Natural Resources 7. l l l

147 176 178 182

Our Environment Self Assessment Test- 4 Practice Test Paper- 1 Practice Test Paper- 2

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- 175 - 177 - 181 - 184 qq

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WISH TO KNOW WHAT WE HAVE FOR YOU UNDER FREE RESOURCES? HERE YOU GO: Date Sheet

Latest Sample Question Paper

Board Syllabus 2022 Exams

Project Report

Solved Board Paper 2018, 2019, 2020

Lab Activities (Science & Math only)

Toppers’ Answer 2015 to 2019

Flowcharts & Mind Maps

How to decode icons given throughout the book?

Where to report any plausible content or technical error?

Write to us on: [email protected]

Topic-wise & Chapter-wise

and remember to mention the following.

Previous Years’ Board Papers

Mind Maps

Topper’s Answer Full name of the book with its ISBN Mention the page number and

Concept Videos

specify the error You may also upload an image

Highly Expected Questions

with the error marked, with a little

for the upcoming exam

detail of the error.

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HOW TO USE THIS BOOK? Chapter Navigation Tools

Syllabus

Mind Maps

Get Concept Clarity

Prescribed by CBSE

Latest Typology of Questions

Topic-wise Segregation

Revision Notes

For Focused Study

Chapter Summary Developed by Oswaal Editorial Board

Passage/ Picture/ Visual & MCQs based questions

Find Exam Oriented Preparation Tools in the Chapter

Mnemonics

QR Codes

Commonly Made Errors

Memorising Better

For Concept Videos

To help you avoid some common errors in your answers

Answering Tips

Topper’s Answer

Previous Years’ Board Papers

Academically Important

Tips to Improve your Score

Learn how to write perfect answers

To help you decode the paper pattern

Look out for Highly Expected Questions for the upcoming exams

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Self Assessment Test

(Unit-wise)

TACKLING TERM- II BOARD EXAMS Term-II exams will be conducted around March-April 2022 for the latter 50% of syllabus. The two hours examination will consist of MCQs (Case-based, Assertion based, and Stand-

Banking on Better Systems

alone), very short, short and long answer questions. Though,

“Improvise, Adapt, overcome” has been the mantra of education boards and schools everywhere. Conducting lectures as well as assessments online was still pretty uncommon in our country. But now teachers and students have got familiar with the new ways. What is pushing ‘Change’ even further is the new National Education Policy (NEP) of 2020. The intention of shifting from rote learning to competency-based development will prove beneficial to the coming generations; and in turn, to the country.

that time, a 90-minute online MCQs test will be conducted for

if the Covid-19 situation does not allow for a physical exam at Term-II, just like Term-I. To score well in Term-II, students need to start by acquiring the latest and most relevant study material. The focus should be on conceptual clarity rather than mugging up facts. Students should find out their preparation level by conducting regular self-assessments and practicing questions from this question bank. Breaking down the syllabus in a systematic way right from the beginning will help students learn better and secure a high score.

Oswaal Question Banks for CBSE Term-II exams include 1. Objective Questions based on new typologies introduced by the board • MCQs (Stand- alone) • MCQs (Assertion-reason) • MCQs (Case-based) 2. Subjective Questions • Short Answer Questions • Long Answer Questions 3. Previous Years’ Questions with Board Marking Scheme Answers 4. Revision Notes for in-depth study 5. Modified & Empowered Mind Maps & Mnemonics for quick learning 6. Chapter-wise Learning Outcomes & Art integration as per NEP 7. Include Questions from CBSE official Question Bank released in April 2021 8. Unit-wise Self-Assessment Tests & Practice Papers 9. Concept videos for blended learning Our Heartfelt Gratitude Thank you to our authors, editors, and reviewers, who always work towards the goal of “Making Learning Simple” for every student. Wish you all Happy Learning! Wish you a Successful 2021-22!!

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CBSE CIRCULAR 2021-22 dsUæh; ek/;fed f'k{kk cksMZ

CENTRAL BOARD OF SECONDARY EDUCATION

NO.: F.1001/CBSE-Acad/Curriculum/2021

Date: July 22, 2021 Circular No: Acad- 53/2021

All the Heads of Schools affiliated to CBSE Subject:

Term wise syllabus for Board Examinations to be held in the academic session 2021-22 for Secondary and Senior Secondary classes and guidelines for the conduct of the Internal Assessment/Practicum/Project.

This is in continuation to Board’s circular number Acad 51/2021 dated July 05, 2021 regarding Special Scheme of Assessment for Board Examination for Classes X and XII for the Session 2021- 22. The syllabus for the two terms mentioned in the scheme in all subjects for classes IX to XII are hereby notified vides this circular. In addition to syllabus for term end board examinations, guidelines for the conduct of Internal Assessment/Practicum/Project are also enclosed. Schools are requested to share the term wise syllabus and guidelines for the conduct of board examinations and Internal Assessment / Practicum / Project available on CBSE Academic Website http://www.cbseacademic.nic.in at the link http://cbseacademic.nic.in/Term-wise-curriculum_2022.html with all their teachers and students.

(Dr. Joseph Emmanuel)

Director (Academics)

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SYLLABUS Latest Syllabus issued by CBSE for Academic Year 2021-22

SCIENCE Class - X (Code No. 086) COURSE STRUCTURE 3 Hours



Marks 80

EVALUATION SCHEME

THEORY Units



Term - II

Marks

I

Chemical Substances-Nature and Behaviour: Chapter 4 and 5

10

II

World of Living: Chapter 8 and 9

13

IV

Effects of Current: Chapter 12 and 13

12

V

Natural Resources: Chapter 15

05

Total Theory (Term II)

40

Internal Assessment: Term II

10

Grand Total

50

Term - II Theme : Materials Unit I : Chemical Substances - Nature and Behaviour Chapter – 4 Carbon and its compounds Carbon compounds: Covalent bonding in carbon compounds. Versatile nature of carbon.Homologous series. Chapter – 5 Periodic classification of elements Periodic classification of elements: Need for classification, early attempts at classification of elements (Dobereiner’s Triads, Newland’s Law of Octaves, Mendeleev’s Periodic Table), Modern periodic table, gradation in properties, valency, atomic number, metallic and non-metallic properties.

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SYLLABUS Theme : The World of the Living Unit II : World of Living Chapter – 8 How do organisms reproduce? Reproduction: Reproduction in animals and plants (asexual and sexual) reproductive health-need and methods of family planning. Safe sex vs HIV/AIDS.Child bearing and women’s health. Chapter – 9 Heredity and Evolution Heredity: Heredity; Mendel’s contribution- Laws for inheritance of traits: Sex determination: brief introduction;

Theme : Natural Phenomena Unit IV : Effects of Current Chapter – 12 Electricity Ohm’s law; Resistance, Resistivity, Factors on which the resistance of a conductor depends. Series combination of resistors, parallel combination of resistors and its applications in daily life. Heating effect of electric current and its applications in daily life. Electric power, Interrelation between P, V, I and R. Chapter – 13 Magnetic effects of current Magnetic effects of current: Magnetic field, field lines, field due to a current carrying conductor, field due to current carrying coil or solenoid; Force on current carrying conductor, Fleming’s Left Hand Rule, Electric Motor, Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule.

Theme : Natural Resources Unit V : Natural Resources Chapter – 15 Our Environment Our environment: Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances.  ONLY FOR INTERNAL ASSESSMENT Note: Learners are assigned to read the below listed part of Unit V. They can be encouraged to prepare a brief write up on any one concept of this Unit in their Portfolio. This may be an assessment for Internal Assessment and credit may be given (Periodic assessment/Portfolio). This portion of the Unit is not to be assessed in the year-end examination. Chapter – 16 Management of natural resources: Conservation and judicious use of natural resources. Forest and wild life; Coal and Petroleum conservation.Examples of people’s participation for conservation of natural resources. Big dams: advantages and limitations; alternatives, if any. Water harvesting.Sustainability of natural resources.

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SYLLABUS Term - II LIST OF EXPERIMENTS 1. Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it and determining its resistance. Also plotting a graph between V and I. Unit-IV: (Chapter-12) 2. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides. Unit-II: (Chapter-8) PRESCRIBED BOOKS:



Science-Textbook for class IX-NCERT Publication





Science-Text book for class X- NCERT Publication





Assessment of Practical Skills in Science-Class IX - CBSE Publication





Assessment of Practical Skills in Science- Class X- CBSE Publication





Laboratory Manual-Science-Class IX, NCERT Publication





Laboratory Manual-Science-Class X, NCERT Publication





Exemplar Problems Class IX – NCERT Publication





Exemplar Problems Class X – NCERT Publication



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SYLLABUS Assessment Areas (Theory) 2021-22 (Class X) Science (086) Theory



Total Maximum Marks: 80 Marks

Competencies

Marks

Demonstrate Knowledge and Understanding

46%

Application of Knowledge/Concepts

22%

Analyze, Evaluate and Create

32%

Note:



Internal choice would be provided.

Internal Assessment – Term I and II (10 Marks each)



Periodic Assessment

03 marks





Multiple Assessment

02 marks





Subject Enrichment (Practical Work)

03 marks





Portfolio

02 marks



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Be mindful. Be grateful. Be positive. Be true. Be Kind Three things that make you special

Three people you are grateful for and why

Three simple things you are grateful for

A challenging experience that made you stronger

Three ways to inject gratitude into a current challenge

Describe the last time you did something nice for someone

A fear you have overcome

Three activities you enjoy most and why

What made you smile today?

Three things you love about your family

What is your favorite place, and why?

Three things you love most about yourself

The last time you were overcome with joy

A risk you are grateful you took and why

Three everyday items you are grateful for

Three songs that bring you joy

What skill do you have that you are grateful for and why?

One luxury you are thankful for

Describe a rejection you are grateful for

Three things about your body you are grateful for

What are you most grateful for in your daily life?

Three things you are grateful for about where you live

Three items in your home you are grateful for

Say thank you to someone

Something in nature you are grateful for

A person in your past you are grateful for

Something at school you’re grateful for

What is your proudest accomplishment?

Three things you want to manifest

Describe the last time you laughed so hard you cried

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I courageuosly move in the direction of my dreams

I am Sup porte fully by th d e universe

hat I lize w I rea t Control o d cann the goo let d w n a s flo thing

I am wra pped in th e loving en ergy of th e universe I allow m y desires to flow to me now

Affirmations for the new

"YOU"

ly I effortless y m t attrac s e ir des

Accept yourself, love yourself, and keep moving forward. If you want to fly, you have to give up what weighs you down.

All of my thoughts are aligned with my desires

en to I am op nces rie e p x new e ome lc e w d an e into c n abunda my life

I have the p ower to shift my min dset and see the goo d in everything.

, I create When I let go mething space for so better.

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HEAR IT FROM OUR HAPPY READERS!

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